Phonograph-reproducer.



No. 856,038. PATENTED JUNE 4, 1907.

L. DEVINEAU.

PHONOGRAPH REPRODUOER. APPLIUATION FILED JUNE 1a. 1906.

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. 7 BY @W/VMWMK/ ATTYsQ WITNESSES:

bore 5 of-the neck. The recess 3 is located UNITED STATES PATENT OFFICE.

PHONOGRAPH-REPYRODUGER.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed une 18,1906. S rial No 322,242.

To (all whom it may concern..-

Be it known that I, LOUIS DEvIxEAU, a citizen of the United States,residing at Cleveland, in the county ofCuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Phonograph-Reproducers,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings.

One of the objects of this invention is to provide a very simple andcheap reproducer l for phonographs, so arranged that the dia-- phraginmay be easily put in place and is effectively held, but may be removedwhen- P ever'desired.

Another object is to so construct the re- 5 producer thatit may be usedeitherwith the disk records or cylinder records, as desired merely bychanging the needle.

The particular characteristics of the invention are hereinafter morefully described, and summarized in the claims.

I11 the drawing Figure 1 is a side elevation of my reproducer, in theposition as used with E a disk record. Fig. 2 is an edge view of thereproducer, the position being that used with l a cylinder record. Fig.3 is a section through I the sound box. Fig. 4 is a perspective of thespider which holds the disk in place. is a perspective of the disk withits vibrating member. Fig. 6 is a cross section through the disk,showing its connection with the vi- 5 brating member. i As shown in thedrawing, 1 represents a casing which is preferably a casting partly iround and having extended from it a neck 2. g In the face of the.casting is a circular recess 3 which is connected by the slot i'with theeccentrically in the face of the casting as shown. v Trepresents thediaphragm which may be t of metal or other material as desired. Aroundthe periphery of this diaphragm is placed a rubber band S-the elasticityof which causes it to embrace the two sides of the diaphragm, as shownin Figs. 5 and 6. This diaphragm with its rubber band fits withintherecess? 1 and is held therein by the clamping member 1 in the form ofthe sheet metal spider 10,- as shown. This spider has an arm 11 extendedbeyond the diaphragm and this arm of the spider is secured to the casingbya screw. The spider hasthree other arms 12 extending l outward fromthe centraLhead and diago- I nally toward the diaphragm. Thesef arms 5rod is bent at right v center of the diaphragm, as shown at 18.

Fig. 5 5

f is most desired the phragm within the rubber ring carry arc-shapedheads 13 which are adapted to rest on the rubber ring 8 and holdthediaphragm in place, the arms being under tension. Thisinethod ofholding the diaphragm allows it to vibrate easily; at the same time itis'easily removable for cleaning or toreplace the rubber ring.

Formed on the face of the casting 1 are a pair of lugs 15 to which isfastened by screws the cross arm 16 on the rod 17 which carries thereproducer needle. At its inner end, this angles and secured to the Nearthe outer end the rod carries a sleeve 19 in wh ch the reproducerneedleis mounted the same being clamped by the set screw 20.

To remove the diaphragm it is only neces sary to take out the screwwhich. holds the arm 11 and the two screws which'hold the cross bar 16.v

I'Vhenmy sound box is used with a disk record it is placed with thevibration bar 17 at an angle at approximately -15 degrees and thereproducing needle 25 is a direct continuation of the bar. It is to beunderstood that the angle varies with circumstances. If it is desired tocause a louder angle of the .disk is increased,- on the other hand wherea low but'smooth reproduction angle is decreased. When my reproducer isused with a cylinder phonograph, the sound box occupies a substantiallyhorizontal position, and

bar, as shown in Fig.

The space on the inner side of the diaprovides an air chamber whichallows the whole diaphragm to acton the air producing more jsatisfactory sound waves than where only the central portionof thediaphragm is eilective.

The exit opening -i isin the form of a narrow radial slot leading fromthis air chamber into:

the tubular bore 5. I have found that such slot assists n1 givingclearer reproductions.

I claimz 1. In a phonographic reproducer, the combinat-ion of a casing,a diaphragm, a retaining member secured to the casing and having springarms holding the. diaphragm in position, and a vibration membercooperating with said diaphragm.

2. The combination of the casing having a recess, providing a seat forthe diaphragm; a diaphragm occupying said recess, a spring retainingmember secured tosaid casing and reproduction the tlie needlc 26 issubstantially at rightangles withthe vibration v ea having arms bearingagainst the diaphragm opposite'said seat to hold the diaphragm in itsrecess. 7

3. The combination of the casing having a recess, a diaphragm occupyingthe said re cess, a member secured to said casing and having spring armsbearing against the diaphragm near its periphery to hold it in itsrecess, and a vibration bar mounted on the casing and cooperating withthe diaphragm. 4. The combination of a casing having a' recess, adiaphragn, a rubber band around the same, the diaphragm and band seatingin the recess, and a clamping member secured to the casing and havingspring arms bearlng on the rubber on the outer face of the diaphragmnear its periphery to hold it in its place.

5.' The combination of a casing, a diaphragm, a retainingspider securedto the casing and having spring arms bearing against the diaphragm tohold it in place, and a vibration member cooperating With said diaphragm.

6. The combination. of a casing, a diaphragm, a sheet metal spiderhaving spring arms with arc'shaped heads adapted to bear against thediaphragm, and a longer arm,

and means for removably securing such long arm to the oasing.

7. The combination of a casing having a recess, a diaphragm, a rubberring surrounding the periphery of the diaphragm and extending ontoopposite sides of the diaphragm, said diaphragm and ring occupying saidrecess, and the spider secured to the casing and having arms bearingagainst the rubber on the outer side of the diaphragm.

8.- The combination of the casing, a diaphragm, an elastic ringsurrounding the periphery of the diaphragm and extending onto oppositesides of the diaphragm, a spider sseoee secured to the casing and havingarms bearing against the rubber on the outer side of the diaphragm, anda vibration bar supported by the casing and secured at the inner end ofthe diaphragm and carrying at its outer end a sleeve, and a reproducing}needle occupying such sleeve.

9. The combination of a casing,' a diaphragm, a vibration bar, mountedon the casing and secured to the diaphragm, and a spider mounted on thecasing for holding the diaphragm, said spider comprising a central headand arms leading outward therefrom diagonally toward the diaphragm andadapted to bear against the outer side of the diaphragm, and a longerarm extending from,

said head onto the casing and furnishing means whereby the spider isheld to the casing.

10. The combination of a casing, a diaphragm, a vibration bar'mounted onthe casing and cooperating with the diaphragm and having a sleeve at itsfree end, and means for clarnping in said sleeve either a straight orbent needle.

In testimony whereof, I hereunto afiix my signature in the presence oftwo witnesses.

LOUIS DEVINEAU. Witnesses:

ALBERT H. BATES, BRENNAN B. WEST.

